Safety razor



Dec. 7, 1948.

O. RASMUSSEN SAFETY RAZOR Filed Dec. 16, 1944 INVENTOR OL/IF RASMUSSE/YATTORNEY Patented Dec. 7, 1948 Olaf Rasmusse'm- Sidnem ohio IApplication December 16, 1944, sr'iali Nt. 568,424

This invention relates to improvements in safety razors particularlyadapted for use in pre- ,paring patients for surgical operations.

It is among the objects of the present invention to provide a safetyrazor adapted to remove a e thick growth of substantially long hairwithout becoming clogged.

, I A further object of the present inventionis to provide a safetyrazor adapted to be used in hospitals for shaving patients preparatory[to surgical operations requiring the removal .of

densely growing long hair particularly aboutthe abdomen of the patient.

Further objects and advantages of the present invention will be apparentfrom the following description, reference being had to the accompanyingdrawings wherein a preferred embodiment of the present invention isclearly shown.

In the drawings:

Fig. 1 is a perspective view of the shaving device.

I Fig. 2 is a detail sectional view of theclamp member of the device.The view is taken along the line 2-2 of Fig. 6.

perforation corresponding to the perforation I comprising. the spaeedopenings 25, 26 and 21 and the connecting 'slot'28 in the guard. Thelonger sides of the blade provide the two cutting edges 3| and 32.Normally the width of the blade from cuttinge'dgetb cutting edge issubstantially equal to the distance'betwe'en the two outer edges of the"guardjslots 22 and 23.

clamp 40 urges the blade against the platform; of the guide. As shown inthe Figs. 6 and 8,this clampv 40 is of rectangular shape similar inproportions but narrower and shorter than the guard 20. In fact theclamp is narrower than the blade and is shorter than the slots 22 and 23in the guard. The 'innerfsurfaceM' which engages the blade: 30 when thedevice is assembled, is transversely arcuate as shown in Figs. 2 and 5.A

projecting rib 42 extends from the inner surface on each side of a screwstud 43 which extend centrally' from this inner side. of the clamp. Ateachcorn'e'r of the clamp'there is provided a small lug extending fromthis side of the clamp, said lugs engaging the ends of the blade whenthe device is assembled thereby. to hold theblade Fig. 3 is an end viewof the blade member of 2 5 in proper'positionon the clamp. The ribs 42and the device.

Fig. 4 is a transverse section of the guard member of the device, takenalong the line 4- -4 of Fig. 7.

Fig. 5 is a cross section of the assembled device, 30.1

taken along the line 5-5 of Fig. 8. v

Fig. 6 is an inside view of the clamp memben Fig. 7 is a plan view ofthe guard member. I

. Fig. 8 is an end view of the assembled device.

All of the Figures 2 to 8 inclusive are shown at an enlarged scale, theFigure 1 showing theldevice at substantially actual size. z I

The numeral 20 designates the guard member of the device, detailedlyillustrated in Figs. 4 and '7. 'It is of rectangular shape and arcuatet'rans- 4Q versely as at 2!. The guard 20 has two elongated slots 22 and23, each one adjacent to and parallel with a longer edge of. the guard.E'ach. slot terminates adjacent a shorter, arcuate edgeof the screw stud43 extend into and through the perforations in the blade identical tothe per- ;foratio ns 25, '26, 21 and 28 in the guard platform 24,throughwhich said ribs and screw stud also extend when, theclamp andblade are placed upon the guard.

{means for urgingth e clamp toward and vagainstqthe blade 30 to press itupon the guard platform 24 is provided by themember or staff which isinteriorly' threaded at one end to .receivethe' screw stud 43 of theclamp as shown in Fig.5. This st afi 50 forms the handle for the.ishavingdevi'ce aslshown'in Fig. l.

When the handle'Bfl is screwed uponthe screw stud 43, the end of thehandle will engage and to press the blade" 30, thereupon.

the guard as shown in Figs. 7 and 8. The p61 4 hasbeen,mentionedheretofore, the inner tion 24 of the guard, between the twoslots Hand .23, is flat. It has three spaced, circular perfora tions 25,26 and 21 connected together'byi an elongated slot 28. The lines 29 and30 indicate surface 4|, orthe surface of clamp engaging the blade isarcuate as shown in Figs. 2 and 5. Thecurvature ofthis surface is ofsuch degree that when the clamp is drawn toward the guard the blendingjuncture between the flat plane of 59 by operation of handle 50 so thatthe blade 30' is the guard portion or platform 24 and 'the re spectivearcuate ends of the guard. The longer portions of the guard between eachslot andits adjacent guard edge are curved to coincide with the arcuateend portions. This is clearly il 1us'-.

trated in the Figs. 4 and 5.

The flat platform portion 24 of the guard has the blade 30 clampedthereupon when the shaving device is assembled for use. This blade is.clampedagainst the platform 24 of the guard,

tive guard slots :22and 23 and held a distance of [no less than'fortythousandths (.040) of aninch from theinner edge of the respective guardslot. Injother wordsgthe curvature of the'inner surshaped similarly tothe guard and has a central face I of theclamp 4)) is such that theblade is flexed toward the guard, so that a clearance space of no lessthan forty-thousandths (.040) of an inch is provided between the cuttingedge of the ldlade andfits respectiiie "guard slot edge,

of hair and due to the minute space would clog up with the few longhairs it succeeded to cut. To facilitate cutting of the longer hair bythis ordinary razor and par-tially reducing the possitherebyp'rovidingan-aniple sfiacthiouh whih 5 bilit'y of itsvb'ecor ningclogged, the "razor may be a mass of long shaven hair may pass Withoutclogging.

As shown in Fig. 5, the blade when flexed makes a line contact with thesharp outreiige adjusted to permit flexing of the blade aWay from -1 itsguard and thereby increase the spacing. This however destroys the safetyfactor of the razor "by 'iifoving the cutting edge of the blade out ofof the guard platform 24 as at 44, tli'rebyelimc -10 the-properpositionrelative to the uard in which inating a pocket in which s l aven haircould accumulate and thus cause nagging.

The outer surface of the clamp 40 is trans versely arcuate as shown inFigs. 2 and 5. This position the proper degree of safety is provided.Applicants shaving device is particularly designed that the cooperatingguard and clamp are so fashioned that the blade is flexed to hold itscurvature is of such a radiu s that the'line ex- 15 vcutting edge asubstantially greater distance d t ee cihe e a 's i il iif rlt e e its lie ,rl o mei t me -gum 2o.

theraabrwill notciit; jim verfwhenth "cutting "edgef'df mabradejxtenduptosfam aiginary larc linle ga safe cuttinf pertio of the blade e1;-ltnds beyond the chord to abov as the "fconta line or th f'llIl sii l rh ei q m s en =pl'1 eldtoia' bodytlo shave hairrhe' iaiiip in' anag ato" include theiab'qve "de m "non" plane of the p1 K ass-em 1e21, 6a

do -'the "plea? I p i n r orty-trii'sarrdui (mart an inch "between the"til-aide a rid slot edge through which tli tl'fr' ha'ir nias's inarreiy "pa'ss Without "clogging,

tgsw inasm eof i h. t w

lare. a would tend to evn "though the "shaving device is "reino'v'irig adense growth of long hair.

Applicant's invention therefor tenures-an ir'nprovedsh'aving devicecapable of removing by s havi'ng a dense-growth of hairgwithout'bedfnirilg fp arable to that 0f the ordinary "safety time adaiate'donly to shave short a hair *stu'bbles on' the face.

:whne the'*embodirnent 0f-the"preent invention as ereihfiis olos'ed,constitutesa prefer" for'fn, I o be -uiide'rst'ood that other formsrni'g'ht be adoptedjall co'ining within the scope of-the cla ihiswl'fichfollow;

What is claimed is as follows: p "1. agitating"deviee eomprismg mco'I-nbirlation, a guard, transversely arcuate and having two tsjlb'tsath parallel to 'anu adjacent a In'ger edge or "'said guard andterminating adjacent the shorter, arcuate edges thereof, the*middleportion responding surfaces of the arcuate and-fiat porjtionsoffthe "-guar'd b'ei'ng in tai'igency at the longitudinal center-bf thegi.1ard; '-a""b1ade shorter than the length of the slots and wider thanthe stat Fig. "to mi ddleportidn or theguard and aanower than 'tl'ieo'ladean'd having an arena-esurfaee eesaete to engage and i'iig'efthebladetowar 'sa d 'flat portio erase-guard and thereby iing said bladetransversely ovensaid portion 'to hold a-Ch ng'edge tfiei'eofnoless t'han foit'y thous th an inch ffin the adjacent' ed'ge of iguard" aidclar'ripbir'ignarrower tha'n'and-longer than he 'blade ,yet shorter thanthe slots in' -th'e '"guaid and' iiieans for;urging*the clainp flex'it," said in'eansproviclinga handle for the device I I 2 shat ifigdevice'cornprisirig in combination, a ctangular, trans'vfersely arcuatehaying "a ngle,felongatedfslotprovided a'djac'nt d parallel to eachlonger-edge of said guar the iii-tier adjacent ed ges of the" two (slots'defin'ir ig *fa fiat; cn'ter platform portion 1. on the guard;'=-a doul gedge blade the "length of'fiihih glide overa greater portion of"ththiEKgriSwth "fiii inftl'ie made-"engagingsurrace'tr-sameiamp beingarcuate transversely to press the blade against the outer edges of saidplatform and cause said blade to be bent to conform with the curvatureof the engaging clamp surface whereby each cutting edge of the blade isflexed and held in spaced parallelism withits adjacent guard slot edgeno less than a distance of forty thousandths of an inch, theoutersurface of said clamp being transversely arcuate, the curvature being ofsuch a degree that extension of the arc will touch both the adjacentedge of the blade and the guard edge when the clamp is in position onthe guard; and means for urging the clamp to press the blade into flexedcontact with the platform of the guard, said means providing a handlefor the device.

3. A shaving device comprising in combination, a rectangular,transversely arcuate guard provided with two elongated slots eachparallel to and alongside a longer edge thereof, the portion of theguard between said slots being flat; a rectangular blade, the two longersides thereof providing cutting edges, the blade being shorter in lengththan the slots in the guard, the width of the blade being substantiallyequal to the distance between the two outer edges of the guard slots;

a rectangular clamp less in width and longer than the blade but shorterthan the guard slots, said clamp having an inner surface transverselyconcaved, for engaging and pressing the blade upon the flat portion ofthe guard to flex it so that each cutting edge thereof is no less thanforty thousandths of an inch from the adjacent surface of the guardslot, the outer edge of the clamp being transversely arcuate, thecurvature being of such a degree that the edges of the blade and theguard lie on the extended line thereof; and means for drawing the clampupon the guard to squeeze and flex the blade therebetween, said meansproviding a handle for the device.

O'LAF RASMUSSEN.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 1,839,303 Felser Jan. 5, 19321,888,962 Swan NOV. 22, 1932 2,312,503 Testi Mar. 2, 1943

